There is a bespoke Italian bike maker for very expensive custom build bikes.. in titanium, with exactly that. ..seatpost is part of the frame..no welds visible. Integrated.. can't remember the name of the builder...
There is a bespoke Italian bike maker for very expensive custom build bikes.. in titanium, with exactly that. ..seatpost is part of the frame..no welds visible. Integrated.. can't remember the name of the builder...